Baseline mean values for all groups and linear mixed models for the effect of the interventions on psychosocial and organisational work factors at 6 and 12 months
| Baseline | 6 months | 12 months | ICC* | |||||||||
| Inspection | Guidance | Control | Inspection | Guidance | Inspection | Guidance | ||||||
| Mean (SD) | Mean (SD) | Mean (SD) | Coef. | 95% CI | Coef. | 95% CI | Coef. | 95% CI | Coef. | 95% CI | ||
| Quantitative demands† (1–5) | 2.96 (0.76) | 2.97 (0.73) | 3.08 (0.78) | 0.05 | −0.06 to 0.17 | −0.02 | −0.14 to 0.08 | 0.11 | −0.02 to 0.24 | −0.01 | −0.13 to 0.13 | 0.104 |
| Decision demands† (1–5) | 3.57 (0.65) | 3.58 (0.65) | 3.62 (0.64) | 0.01 | −0.08 to 0.09 | −0.02 | −0.11 to 0.06 | −0.06 | −0.17 to 0.04 | −0.02 | −0.13 to 0.08 | 0.019 |
| Learning demands† (1–5) | 2.52 (0.58) | 2.52 (0.60) | 2.54 (0.59) | 0.04 | −0.03 to 0.11 | −0.01 | −0.09 to 0.06 | 0.06 | −0.03 to 0.16 | −0.01 | −0.10 to 0.09 | 0.008 |
| Role clarity‡ (1–5) | 4.37 (0.60) | 4.28 (0.63) | 4.27 (0.70) | 0.01 | −0.07 to 0.10 | 0.06 | −0.02 to 0.14 | −0.05 | −0.16 to 0.06 | 0.03 | −0.07 to 0.14 | 0.006 |
| Role conflict† (1–5) | 2.64 (0.79) | 2.58 (0.79) | 2.68 (0.85) | −0.01 | −0.13 to 0.11 | −0.07 | −0.19 to 0.05 | 0.10 | −0.04 to 0.25 | 0.07 | −0.07 to 0.22 | 0.029 |
| Decision control‡ (1–5) | 2.79 (0.73) | 2.75 (0.67) | 2.80 (0.70) | −0.07 | −0.16 to 0.01 | 0.08 | −0.01 to 0.17 | 0.01 | −0.10 to 0.11 | 0.16 | 0.04 to 0.27 | 0.002 |
| Control over work intensity‡ (1–5) | 2.29 (0.85) | 2.23 (0.76) | 2.36 (0.87) | 0.01 | −0.09 to 0.10 | 0.14 | 0.03 to 0.24 | −0.01 | −0.14 to 0.10 | 0.16 | 0.04 to 0.29 | 0.001 |
| Positive challenges at work‡ (1–5) | 4.20 (0.66) | 4.20 (0.60) | 4.19 (0.63) | 0.01 | −0.07 to 0.10 | 0.04 | −0.04 to 0.13 | −0.03 | −0.14 to 0.08 | 0.03 | −0.07 to 0.15 | 0.010 |
| Fair leadership‡ (1–5) | 4.00 (0.85) | 4.11 (0.79) | 3.99 (0.83) | −0.05 | −0.19 to 0.08 | 0.11 | −0.02 to 0.25 | −0.05 | −0.22 to 0.11 | 0.07 | −0.09 to 0.24 | 0.040 |
| Empowering leadership‡ (1–5) | 3.22 (1.05) | 3.27 (1.00) | 3.18 (1.01) | −0.01 | −0.18– to 0.15 | 0.10 | −0.06 to 0.26 | −0.05 | −0.25 to 0.14 | 0.23 | 0.03 to 0.43 | 0.053 |
| Support from immediate superior‡ (1–5) | 3.81 (1.02) | 3.89 (0.97) | 3.71 (1.02) | −0.06 | −0.22 to 0.10 | 0.08 | −0.08 to 0.24 | −0.13 | −0.32 to 0.06 | 0.16 | −0.03 to 0.36 | 0.049 |
| Support from coworkers‡ (1–5) | 4.27 (0.80) | 4.24 (0.80) | 4.17 (0.82) | −0.01 | −0.11 to 0.10 | −0.01 | −0.11 to 0.10 | −0.05 | −0.18 to 0.08 | 0.10 | −0.03 to 0.24 | 0.001 |
| Focus on human resources‡ (1–5) | 2.95 (0.98) | 3.12 (0.91) | 2.97 (0.96) | 0.01 | −0.14 to 0.17 | 0.02 | −0.13 to 0.17 | −0.13 | −0.31 to 0.05 | 0.02 | −0.16–0.21 | 0.046 |
| Predictability in the coming month‡ (1–5) | 3.49 (0.97) | 3.50 (0.90) | 3.47 (0.95) | 0.12 | −0.02 to 0.27 | 0.02 | −0.12 to 0.17 | 0.01 | −0.17 to 0.18 | −0.05 | −0.24 to 0.12 | 0.033 |
*Intraclass correllation (ICC) for the municipal cluster.
†A lower score is considered advantageous.
‡A higher score is considered advantageous.